Ashton Kutcher and Mila Kunis joke about not bathing their kids

They’re on their bath behavior.

Ashton Kutcher shared a video of him and his wife Mila Kunis bathing their children, Wyatt Isabelle, 6, and Dimitri Portwood, 4, to Instagram Thursday, weeks after the couple sparked a debate about personal cleanliness.

“This bathing thing is out of hand,” Kutcher captioned the post, adding “#KutcherBathroomTalks.”

Kutcher, 43, panned from the running shower to his 37-year-old wife, asking in mock seriousness, “What’s going on?”

“It’s water! It’s water,” Kunis explained. 

The “Two and a Half Men” star kept the bit going, asking his “No Strings Attached” co-star, “You’re putting water on the children? Are you trying to melt them?” 

“Are you trying to injure them with water?” he continued. “This is ridiculous! What’s going on?”

“That’s like the fourth time this week” Kutcher yelled, as his wife, laughing, agreed, “It’s too much.” 

“Their body oils are going to be destroyed,” Kutcher finished.

Last month, the parents revealed on Dax Shepherd’s Armchair Expert podcast that they don’t believe in bathing their kids with soap every day. The “Just Married” star said of bathing his kids, “Now, here’s the thing: If you can see the dirt on them, clean them. Otherwise, there’s no point.”

Kutcher said he’s leading by example, at least, explaining that he washes “my armpits and my crotch daily, and nothing else ever” to preserve “all the natural oil on your skin.”

Kunis’ “Bad Moms” co-star Kristen Bell agreed, claiming, “I don’t hate what they’re doing. I wait for the stink.”

“Once you catch a whiff, that’s biology’s way of letting you know you need to clean it up,” Bell added.

Celebrities from across the spectrum waded into the discourse, with Jake Gyllenhaal telling Vanity Fair last week “more and more I find bathing to be less necessary, at times.”

Meanwhile, Cardi B tweeted on Tuesday, “Wassup with people saying they don’t shower? It’s giving itchy.”